Friction shoe for window sashes



y -7, 1930. 4. P. APPLEBY 1,760,227

FRICTION SHOE FOR WINDOWSASHES Filed March 21, 1927 93 V y 29 1 J2 27 7Z flHA ELi 2.5

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War/28y Patented May 27, 1930 UNITED STATES PATENT OFFICE JAMES P.APPLEBY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO FRANK GRAVES SASH, DOORAND MILL COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION 4 OFCALIFORNIA FRICTION SHOE FOR winnow SASHES Application filed March 21,1927. Serial No. 176,894.

"entitled Sash balances, filed Mar. 21, 1927,

Serial No. 17 6,893, I have set forth a situa tion wherein aspring-actuated drum is aplied'to one side, only, of a sash. Thetendency of this single balance is to rotate the sash about a horizontalaxis, forcing the upper corner of the sash, at the side opposite that ofbalance-application, into binding engagement with the, frame. In thatapplication, I have shown, and broadly claimed, means for counteractingthis rotational tendency, thus insuring that the sash be held squarelywithin the frame andthercfore free to slide smoothly. The device shownin the present application is one which is adapted to function similarlyto the counteracting device disclosed in said co-pending application,though it has several features which render it more capableofadvantageous use than the previously disclosed device.

In the above situation, the device of my.

invention not only counteracts the rotational tendency of the sash, butalso serves as, a

frictional retard or drag tending to hold the sash in adjusted position.

In the event it is undesirable 01' not feasible to use a spring actuatedbalance on either side of the sash, 1 may utilize two of the devicplshere disclosed, one at each side of the sas i The device is adapted-to,be applied to a corner of the sash, preferably, thou h not necessarily,to an upper corner, an is so fashioned and positioned on the sashthat itmay be adjusted to vary the effective tension of its spring memberwithout dismounting the sash, a feature of obvious advantage.

The device may be generally described as being made up of an L-sh'apedmember, a flat, bowed spring being applied to one of the arms and theother arm having means -where-' by it may be anchored to the sash.However, the details of construction and method of application may bedescribed ,to better advantage in the following specification, referencebeing had to the accompanying drawings, in i which:

Fig. 1 is a perspective view of apreferred embodiment of my invention;

Fig. 2 is an illustration of a sash and frame, showing my device appliedthereto in a given situation Fig. 3 is a view similar to Fig. 2, butshowing the device applied in a different situation;

F 1,224 is an enlarge device in applied position; P 1 Fig. 5 is a top,plan view of Fig. 4;

Fig. 6 is an enlarged fragmentary section on line 6-6 of Fig. 1; and

Fig. 7 is a detached perspective view-of the pressure spring or shoe. an

In Fig. 1 I have shown an L-shaped body or supporting member 10, therelatively short arm 11 being bent at-a substantially .right- 7 angle tothe relatively long arm 12. The

supporting member is preferably made of comparatively stiff metal, andis of a nature to be fashioned quickly and easily by punchpressoperations. 7

Amchored to the lower end of arm 12 is a friction or pressure shoe 13which is in the form of a flat, centrally bowed spring, the relativelystraightend portions 15 and 16 contacting with the outer face 17 of arm12. While'any suitable type of anchoring connection may be utilized forholding the spring [I to the supporting'member, I have illustrated apreferred one. For this purpose I ,pun'ch end 16 in a manner to providean aperture 18 of polygonal outline. A plurality of lips 19 are pressedoutwardly .from arm 12, said lips being passed through aperture 18 andthen turned over upon the upper face of a spring 13.. In.pressing-out'lips 20 an aperture 18 of polygonal outline is left inarm' 12, and since the lips engage the defining walls of polygonalaperture 18 they prevent 100 d section showing my and spring. Of course,the turned-over lip portions 20 hold the spring and supporting memberagainst separative displacement.

End 15 is adapted toride on face 17 during flexure of the spring, thearm .12 thus providing a wear-plate and assuring smooth spring action.

The under face of arm 11 preferably is provided with .positioning means21. In the preferred embodiment of the invention, this means is shown tobe a hollow stud which is elongated in the direction of the length ofarm 11. Looking at it from another angle, arm 11 may be considered asbeing provided with an elongated aperture 22 about which extends fromthe under face of arm 11 a dependent, marginal flange 23. Preferably,flange 23 is formed by pressing down the stock of arm 11 during thepunching of apertui'e 22, the flange inclining inwardly toward the axisof the aperture in order'to give the stud tapered characteristics so itmay more readily be driven into a window sash in the manner to bedescribed later. The described formation of flange 23 also providesa'c'omparatively sharp edge 24 which further facilitates the entry ofthe stud to the sash. i The inclination of the flange also gives flaringcharacteristics to Way 25 defined by the flange, the upper, wider partofthe 'way being of suflicient width to take a nail head, while thelower, relatively narrow portion of the way is preferably of a widthjust to take tween frame and sash is greatly exaggerated nicely theshankof a nail or screw of given diameter.

In Fig; 2 Ihave indicated vertically extending window'frame members 26and 27 between which, is adapted to slide sash. S. It may be here notedthat in this'figure', as well as in Figs. 3, 4 and'5, the clearance beinorder that the structural details of my shoe may be made more clear.Frame member 27 carries a spring actuated balance generally designatedat 28, connection between said balance and sash S being made in theusual manner through band or tape 29'. Balance 28 has a natural tendencyto rotate sash S about a horizontal axis in a counter clockwisedirection, as viewed in Fig. 2, since the free end of the band isapplied at 30- to the lower, right-hand corner of the-sash. My

improved shoe, generally designated at 9, is therefore introducedbetween frame member 26 and the upper, left-hand corner 31, of sash S,sald corner occurring at the junction of horizontal sash member 32 andvertical sash member 33.

Body member 10 is applied to corner'31 in such a manner that arm 12 liesadjacentedge 34 of member 33, and arm 11 engages the upper edge 35 ofmember 32. It is not necessary that the entire extent of arm 12 engageface 34,- though the lower end of the arm engages said face whenthespring is ten sioncd between the sash and the face 36 of member 26whichv opposes face 34. With the gap or clearance G between member 26and 33 of given extent and with balance 28 exerting a in engagement withface 34 during this movement.

With the support member thus adj ustedto bring spring 13' intopredetermined pressural contact with face 36, arm 12 is driven down in amanner to sink or embed stud 21 in member 32 (Fig. 4), the studthus'serving to grip the sash in a manner tending to hold the supportmember from displacement, the elongated characteristic of thestud'holding said member from rotating out of position. In order toprovide a more positive anchorage for the support member, a nail orscrew N may be driven through the hollowv stud into the 'sa'sln Theflaring characteristics of way 22 allow the head of screw or nail to bedriven flush or slightly below the upper face of arm head when it is inthe nature of a nail) the support member may then be lifted clear ofsash member 32, and the support member swung to a new position. It thenremains only to press Stud 21, in its new position, back into the sashand drive the nail home again. This may all be done without dismountingthe sash from its frame, a feature of obvious advantage.

When it is desired that the lower end of the support be securelyanchored to the sash, a nail or similar holding device N may be passedthrough aperture 18 and into sash member 33, but this precaution is notordinarily necessary and can only be taken when the sash is dismountedfrom the frame.

' In Fig. 3 sash S is mounted between frame members 26 and 27' in themanner describedin connection with the sash of Fig. 2. Here, however, inplace of balance 28, is shown a. friction shoe 9 similar to shoe 9 andapplied to the sash in the same manner. Of course, it is also possibleto apply the-shoes to the lower corners of the sash, and suchwillordinarily be done when the sash'is of considerable vertical extent,or when the clearance between frame and sash is great.

It will'be evident that shoes 9', 9 not only serve to hold the sashessquarely'within their frames, but also have such frictional contact Iscopelof said claims.

with the frame members as to tend to hold the sashes in positions towhich they have. been slid. In some situations, it is desirable toprovide the frame members with inwardly facing sockets 39, into whichsprings 13. are

adapted to enter to hold the sash more posi-' tively in certain givenpositions of, adjust ment, though the springs will ride out of thesesockets when slight manual efiort is applied to the sash to raise orlower it. It will be understood the drawings and description are tobeconsideredmerely as illustrativ of and not restrictive on ;the broaderclaims appended hereto, for various changes in design, structure andarrangement may be made without departing from the spirit and I lclaimzA 4 1. In a device' of the character described,

an L-shaped member, a bowed spring anchored to one of the arms of themember,

. and an inwardly projecting stud on the other arm, said stud beingelongated in the direction of the length ofsaid other arm.

2. In a device of the character described,

an L-shaped member, a bowed spring' anchored to one of the arms ,of themember,

the other arm of themember havin a slot extending longitudinallythereof, an a depending marginal flange aboutthe slot.

3'. In a deyice of the character described, an L-shaped member, a bowedspring anchored to oneof the arms of the member, the

other arm of the memberhaving a slot extending longitudinally thereof,'and a deending marginal flange about the sl0t,said an e inclininginwardly towards the axis of t e slot. x a

4. In a device of the-character described, .a supporting. member,-abowed spring, and means for anchoring the spring'tothe memher, saidmeans embodying a plurality of lips pressed outwardly from the member,th'rough a polygonal aperture -"n the spring and bent over the outerface 0 thespring, said li'ps engaging the defining walls cf the spring-I aperturel In witness that I claim the fore oing I have hereuntosubscribed my name t is 21st glay of February, 1927.

' JAMES P. 'APPLEBr.

